Harrington Hoists and Cranes SNER Hoist - Manual (Page 26)

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Table 5-4 Top Hook & Bottom Hook Dimensions
“k” Measured When New:
Top: _________________________
Bottom: ______________________
Capacity Code
Nominal "k"
Dimension*
inch (mm)
"u" Dimension
inch (mm)
"t" Dimension
inch (mm)
Standard Discard Standard Discard
003S, 005L, 005S 1.65 (42) 0.93 (23.5) 0.83 (21) 0.69 (17.5) 0.63 (16)
010L, 010S 1.97 (50) 1.22 (31) 1.10 (28) 0.89 (22.5) 0.79 (20)
020L 2.46 (62.5) 1.57 (40) 1.42 (36) 1.14 (29) 1.02 (26)
030C 2.95 (75) 1.87 (47.5) 1.69 (43) 1.36 (34.5) 1.22 (31)
*These values are nominal since the dimension is not controlled to a tolerance. The "k" dimension
should be measured when the hook is new - this becomes a reference measurement. Subsequent
measurements are compared to this reference to make determinations about hook
deformation/stretch. See
Section 5.7 , “Hooks - Stretch”.
Table 5-5 Chain Wear Dimensions
Capacity Code
“P” Dimension
inch (mm)
“d” Dimension
inch (mm)
Standard Discard Standard Discard
003S 2.97 (75.5) 3.02 (76.6) 0.22 (5.0) 0.18 (4.5)
005L, 005S 3.76 (95.5) 3.82 (96.9) 0.25 (6.3) 0.22 (5.7)
010L, 010S 4.76 (121.0) 4.91 (124.6) 0.31 (8.0) 0.28 (7.2)
020L, 030C 5.96 (151.5) 6.05 (153.8) 0.39 (10.0) 0.35 (9.0)